摘要
棉花烂铃所形成的僵黄花数量,与吐絮期间的气象条件关系极为密切。据1960~1987年统计:僵黄花率与相对湿度的相关系数极显著(r=0.5021),与雨日的相关系数达显著标准(r=0.4460*),与日照时数的相关系数为显著的负相关(r=-0.4106*)。复相关系数Ry·12的F值(F=4.1145)达0.05显著标准,复相关系数Ry·123的F值(F=2.673)达0.10显著标准。在防治烂铃对策中,以人工去早蕾的产量最高(1259.1kg/hm2),僵黄花率最低(10.65%)。
There
was a closed relationship between the amount of immatured and rotted seed cotton induced by
rotted boll and meteorological factors during harvest period. The data of1960~1987 indicated
that the correlation coefficients between ratio of immatured and rottedseed cotton and ralative
moisture , and rained days , and hours of sunshine were significant.The F-value of multiple
correlation coefficients Ry·12 and Ry· 123 were significant at the0. 05 and 0. 10 levels,
respectively. The lint yield was the highest and the ratio of immaturedand rotted seed cotton
was the lowest in the treatment of removing early squares.
出处
《棉花学报》
CSCD
北大核心
1995年第2期118-122,共5页
Cotton Science
关键词
棉花
烂铃病
气象因素
相关分析
防治
cotton boll-rot
meteorological factor relative analysis control stratics